9 PIN D-SUB CONNECTOR
| Pin | Name | Description | 
|---|---|---|
| 1 | n/c | Not connected | 
| 2 | DSR | Data Set Ready | 
| 3 | GND | Ground | 
| 4 | n/c | Not connected | 
| 5 | RxD | Receive Data | 
| 6 | DTR | Data Terminal Ready | 
| 7 | DCD | Output from modem | 
| 8 | GND | Ground | 
| 9 | TxD | Transmit Data | 
| Contributor: | Joakim Ögren | 
| Source: | Technote HW19: Pinouts at Apple Technical Notes | 
  Copyright © The Hardware Book Team 1996-2004.
  May be copied and redistributed, partially or in whole, as appropriate.
  Document last modified: 2002-01-10